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. 2021 Nov 12;36(8):2700–2706. doi: 10.1053/j.jvca.2021.11.006

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Fig 2 — (A) A forest plot depicting mortality in patients treated with ECMO in COVID-19 and influenza. Relative risk 1.34 (95% CI [1.05-1.71]; I² = 0%; P of heterogeneity = 0.65) ordered by treatment effects. (B) A forest plot showing renal replacement therapy in patients treated with ECMO in COVID-19 and influenza. Relative risk 0.61 (95% CI [0.25-1.47]; I² = 69%; P of heterogeneity = 0.02) ordered by treatment effects. ECMO, extracorporeal membrane oxygenation; RR, relative risk, RRT, renal replacement therapy.